English

Some invariant subalgebras are graded isolated singularities

Rings and Algebras 2022-03-01 v2

Abstract

In this note, we prove that the invariant subalgebra of the (-1)-skew polynomial algebra under a permutation action is a graded isolated singularity, and thus a conjecture of Chan-Young-Zhang is true.

Keywords

Cite

@article{arxiv.2107.03593,
  title  = {Some invariant subalgebras are graded isolated singularities},
  author = {Ruipeng Zhu},
  journal= {arXiv preprint arXiv:2107.03593},
  year   = {2022}
}

Comments

5 pages, comments welcome

R2 v1 2026-06-24T03:59:14.281Z